## Saxon.Api

Class DocumentBuilder

Class DomDestination

Class DynamicContext

Class DynamicError

Class EmptyEnumerator

Class ExtensionFunctionCall

Class ExtensionFunctionDefinition

Class NullDestination

Class Processor

Class QName

Class SchemaManager

Class SchemaValidator

Class Serializer

Class StaticContext

Class StaticError

Class TextWriterDestination

Class XPathCompiler

Class XPathExecutable

Class XPathSelector

Class XQueryCompiler

Class XQueryEvaluator

Class XQueryExecutable

Class XdmAnyFunctionType

Class XdmAnyItemType

Class XdmAnyNodeType

Class XdmAtomicType

Class XdmAtomicValue

Class XdmDestination

Class XdmEmptySequence

Class XdmFunctionItem

Class XdmItem

Class XdmItemType

Class XdmNode

Class XdmNodeKind

Class XdmSequenceType

Class XdmValue

Class XmlDestination

Class XsltCompiler

Class XsltExecutable

Class XsltTransformer

Enum RecoveryPolicy

Enum SchemaValidationMode

Enum TreeModel

Enum WhitespacePolicy

Enum XdmAxis

Interface IMessageListener

Interface IQueryResolver

Interface IResultDocumentHandler

Interface IXdmEnumerator

Interface IXmlLocation

Interface SchemaResolver

## Saxon.Api
Class XdmNode

    public class XdmNode

extends XdmItem

  The class `XdmNode` represents a Node in the XDM Data Model. A Node is an `XdmItem`, and is therefore an `XdmValue` in its own right, and may also participate as one item within a sequence value.

  An `XdmNode` is implemented as a wrapper around an object of type `net.sf.saxon.NodeInfo`. Because this is a key interface within Saxon, it is exposed via this API, even though it is a Java interface that is not part of the API proper.

  The `XdmNode` interface exposes basic properties of the node, such as its name, its string value, and its typed value. Navigation to other nodes is supported through a single method, `EnumerateAxis`, which allows other nodes to be retrieved by following any of the XPath axes.

Property Summary
`QName` | `NodeName` The name of the node, as a `QName`. Returns null in the case of unnamed nodes.
`XmlNodeType` | `NodeKind` The kind of node, as an instance of `System.Xml.XmlNodeType`.
`XdmValue` | `TypedValue` The typed value of the node, as an instance of `XdmValue`.
`String` | `StringValue` The string value of the node.
`XdmNode` | `Parent` Get the parent of this node.
`XdmNode` | `Root` Get the root of the tree containing this node.
`Uri` | `BaseUri` The Base URI of the node.
`Uri` | `DocumentUri` The Document URI of the node.
`String` | `OuterXml` Return a serialization of this node as lexical XML
`NodeInfo` | `Implementation` Escape hatch to the underlying class in the Java implementation

Method Summary
`bool` | `IsAtomic()` Determine whether the item is an atomic value
`String` | `GetAttributeValue(QName name)` Get a the string value of a named attribute of this element.
`IEnumerator` | `EnumerateAxis(XdmAxis axis)` Get an enumerator that supplies all the nodes on one of the XPath axes, starting with this node.
`IEnumerator` | `EnumerateAxis(XdmAxis axis, QName nodeName)` Get an enumerator that selects all the nodes on one of the XPath axes, provided they have a given name. The nodes selected are those of the principal node kind (elements for most axes, attributes for the attribute axis, namespace nodes for the namespace axis) whose name matches the name given in the second argument.
`void` | `WriteTo(System.Xml.XmlWriter writer)` Send the node (that is, the subtree rooted at this node) to an `XmlWriter`
`bool` | `Equals(object obj)` Two instances of XdmNode are equal if they represent the same node. That is, the Equals() method returns the same result as the XPath "is" operator.
`int` | `GetHashCode()` The hashCode of a node reflects the equality relationship: if two XdmNode instances represent the same node, then they have the same hashCode
`String` | `ToString()` Return a string representation of the node.

Property Detail

### NodeName

    public QName NodeName {get; }

  The name of the node, as a `QName`. Returns null in the case of unnamed nodes.

### NodeKind

    public XmlNodeType NodeKind {get; }

  The kind of node, as an instance of `System.Xml.XmlNodeType`.

  For a namespace node in the XDM model, the value XmlNodeType.None is returned.

### TypedValue

    public XdmValue TypedValue {get; }

  The typed value of the node, as an instance of `XdmValue`.

### StringValue

    public String StringValue {get; }

  The string value of the node.

### Parent

    public XdmNode Parent {get; }

  Get the parent of this node.

  Returns either a document node, and element node, or null in the case where this node has no parent.

### Root

    public XdmNode Root {get; }

  Get the root of the tree containing this node.

  Returns the root of the tree containing this node (which might be this node itself).

### BaseUri

    public Uri BaseUri {get; }

  The Base URI of the node.

### DocumentUri

    public Uri DocumentUri {get; }

  The Document URI of the node.

### OuterXml

    public String OuterXml {get; }

  Return a serialization of this node as lexical XML

  In the case of an element node, the result will be a well-formed XML document serialized as defined in the W3C XSLT/XQuery serialization specification, using options method="xml", indent="yes", omit-xml-declaration="yes".

  In the case of a document node, the result will be a well-formed XML document provided that the document node contains exactly one element child, and no text node children. In other cases it will be a well-formed external general parsed entity.

  In the case of an attribute node, the output is a string in the form `name="value"`. The name will use the original namespace prefix.

  Other nodes, such as text nodes, comments, and processing instructions, are represented as they would appear in lexical XML.

### Implementation

    public NodeInfo Implementation {get; }

  Escape hatch to the underlying class in the Java implementation

Method Detail

### IsAtomic

    public override bool IsAtomic()

  Determine whether the item is an atomic value

  returns
    false (the item is not an atomic value)

### GetAttributeValue

    public String GetAttributeValue(QName name)

  Get a the string value of a named attribute of this element.

  Returns null if this node is not an element, or if this element has no attribute with the specified name.

  Parameters:
  `name` -
    The name of the attribute whose value is required

### EnumerateAxis

    public IEnumerator EnumerateAxis(XdmAxis axis)

  Get an enumerator that supplies all the nodes on one of the XPath axes, starting with this node.

  The nodes are returned in axis order: that is, document order for a forwards axis, reverse document order for a reverse AxisInfo.

  Parameters:
  `axis` -
    The axis to be navigated, for example `XdmAxis.Child` for the child AxisInfo.

### EnumerateAxis

    public IEnumerator EnumerateAxis(XdmAxis axis,
                         QName nodeName)

  Get an enumerator that selects all the nodes on one of the XPath axes, provided they have a given name. The nodes selected are those of the principal node kind (elements for most axes, attributes for the attribute axis, namespace nodes for the namespace axis) whose name matches the name given in the second argument.

  The nodes are returned in axis order: that is, document order for a forwards axis, reverse document order for a reverse AxisInfo.

  Parameters:
  `axis` -
    The axis to be navigated, for example `XdmAxis.Child` for the child AxisInfo.
  `nodeName` -
    The name of the required nodes, for example `new QName("", "item")` to select nodes with local name "item", in no namespace.

### WriteTo

    public void WriteTo(System.Xml.XmlWriter writer)

  Send the node (that is, the subtree rooted at this node) to an `XmlWriter`

  Note that a `XmlWriter` can only handle a well-formed XML document. This method will therefore signal an exception if the node is a document node with no children, or with more than one element child.

  Parameters:
  `writer` -
    The `XmlWriter` to which the node is to be written

### Equals

    public override bool Equals(object obj)

  Two instances of XdmNode are equal if they represent the same node. That is, the Equals() method returns the same result as the XPath "is" operator.

  Parameters:
  `obj` -
    The object node to be compared

### GetHashCode

    public override int GetHashCode()

  The hashCode of a node reflects the equality relationship: if two XdmNode instances represent the same node, then they have the same hashCode

### ToString

    public override String ToString()

  Return a string representation of the node.

  This currently returns the same as the `OuterXml` property. To get the string value as defined in XPath, use the `StringValue` property.